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Sturdy Strawberry Rhubarb Bars for Picnics

Close-up of three delicious Strawberry Rhubarb Bars with a thick, bright red filling and golden oat crumble topping.

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Make these portable strawberry rhubarb bars. They are a reliable, layered fruit snack perfect for packing for summer events.

Ingredients

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  • 1 1/2 cups all-purpose flour
  • 1/2 cup rolled oats
  • 1/2 cup packed light brown sugar
  • 1/2 teaspoon salt
  • 1/2 cup (1 stick) cold unsalted butter, cut into pieces
  • 1 1/2 cups fresh rhubarb, chopped
  • 1 1/2 cups fresh strawberries, hulled and quartered
  • 1/2 cup granulated sugar
  • 2 tablespoons cornstarch
  • 1 teaspoon lemon zest

Instructions

  1. Preheat your oven to 375 degrees F. Line an 8×8 inch baking pan with parchment paper, leaving an overhang on two sides for easy removal.
  2. In a medium bowl, combine the flour, rolled oats, brown sugar, and salt for the crust.
  3. Cut in the cold butter using a pastry blender or your fingers until the mixture resembles coarse crumbs.
  4. Press two-thirds of this crumb mixture evenly into the bottom of the prepared pan to form the base layer.
  5. In a separate bowl, mix the chopped rhubarb, strawberries, granulated sugar, cornstarch, and lemon zest until the fruit is coated.
  6. Spread the fruit mixture evenly over the crust layer in the pan.
  7. Crumble the remaining one-third of the crust mixture over the top of the fruit filling.
  8. Bake for 40 to 45 minutes, or until the topping is golden brown and the filling is bubbly.
  9. Let the bars cool completely in the pan on a wire rack before lifting them out using the parchment overhang.
  10. Cut into squares for your picnic food.

Notes

  • For extra sturdy bars that travel well, chill the entire pan of cooled bars for at least one hour before slicing.
  • If your rhubarb is very tart, you may add one extra tablespoon of granulated sugar to the fruit mixture.

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